Alert archive / Texas / Mesoscale Discussions in 2023

Mesoscale Discussion 623

April 26, 202327 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2023, 1:20 PM CDT for 27 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Apr 26, 2023, 1:20 PM CDT (18:20 UTC)
Expired
Apr 26, 2023, 3:45 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe potential...tornado watch likely
Chance of a watch
95%
All 27 counties

Bell County, TX, Bosque County, TX, Brown County, TX, Burleson County, TX, Burnet County, TX, Callahan County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Coryell County, TX, Eastland County, TX, Erath County, TX, Falls County, TX, Hamilton County, TX, Hill County, TX, Lampasas County, TX, Limestone County, TX, McCulloch County, TX, McLennan County, TX, Milam County, TX, Mills County, TX, Robertson County, TX, Runnels County, TX, San Saba County, TX, Somervell County, TX, Taylor County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 121 km from the middle of the area, began a volume at 18:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 6.3 hours before the alert went out and 164 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 2023-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2023-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 276 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
31 J/kg
Mixed-layer CIN
-393 J/kg
Mixed-layer LCL
671 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
276 m²/s²
0-3 km storm-relative helicity
254 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 25, 9:28 PM CDTMesoscale DiscussionSPCBaylor, Brown, Callahan, Coleman, Cottle, Crosby and 20 more92 min
Apr 25, 11:18 PM CDTMesoscale DiscussionSPCArcher, Baylor, Camp, Clay, Collin, Cooke and 30 more117 min
Apr 25, 11:50 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Crosby, Deaf Smith and 14 more115 min
Apr 26, 3:29 AM CDTMesoscale DiscussionSPCEastland, Erath, Hood, Palo Pinto, Parker, Somervell and 1 more2 hr
Apr 26, 9:43 AM CDTMesoscale DiscussionSPCArcher, Collin, Cooke, Denton, Grayson, Jack and 5 more2 hr
Apr 26, 2:51 PM CDTTornado WatchSPCAnderson, Bell, Bosque, Brown, Burnet, Callahan and 26 more7 hr
Apr 26, 4:48 PM CDTMesoscale DiscussionSPCBosque, Brown, Comanche, Eastland, Erath, Hamilton and 1 more117 min
Apr 26, 5:01 PM CDTMesoscale DiscussionSPCAngelina, Cherokee, Gregg, Harrison, Houston, Jasper and 11 more89 min
Apr 26, 6:40 PM CDTMesoscale DiscussionSPCCoryell, Falls, Hill, Leon, Limestone, McLennan2 hr

Nearby

Mesoscale Discussions in Texas, 2023Every mesoscale discussion in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.